Subject: Suggest input changes when updating packages

From: Ricardo Wurmus <[email-masked]>
Date: Fri, 11 Jan 2019 10:11:55 +0100

Hi Guix,

Here are two patches: the first changes (guix upstream) and (guix
scripts refresh) to support reporting of input changes when updating a
package.  The second lets the CRAN and Bioconductor importers use these
features.

--
Ricardo